Description:
The Scania has various config

4 motors - 500, 560, 620, 730 HP

Rail trailer operation:

From the back of the rail trailer drive X press, if the hook is about 90 degrees then press Y, sometimes to 2 times so that he reacts.

Meanwhile, drive 1-2 meters before driving and set the drop point on the trailer.

the container is secured as soon as you hook up the trailer, you can solve for the multiplayer the container with X.

Multiplayer is also possible if you use the mod MPOwner

If the vehicle is registered in the MP on your name, then you tell the game that your hoster of this vehicle since and already with uncoupling of a container

Credits:
Dimanix, Ap0lLo, HoFFi